The manuscripts are one of the key elements in the Broken Sword series. Most of the time it represents the starting point of the adventure, that George and Nico try to decypher, hence the need to travel worldwide to gather clues.
Broken Sword: The Shadow of the Templars
Broken Sword: The Smoking Mirror
Broken Sword: The Sleeping Dragon
The only manuscript that is featured in the game is called Voynich Manuscript. However, it is only mentioned by Vernon Blier the hacker responsible for decoding it. According to Vernon in his DVD message, the manuscript contains strange texts about the end of the world. Besides the prediction, it also has a message that translates as "Devils and witches dancing around with cows on the Sabbath" and a diagram that looks like a map of Ley lines.
Broken Sword: The Angel of Death
This manuscript is Templar-related. It was made in 1307. According to Maynard it was egyptian. It shows where the Cherubs are hidden.
It represents an Old Citadel of Constantinople, now Istanbul, on the east. Saint George, the patron saint of England, is depicted as fighting a dragon.
There is also a representation of Baphomet.
The first Cherub lies in Istanbul, Turkey, beneath the Topkapı Palace. The second Cherub is below the temple of Mount Horeb.